package com.atguigu.gulimall.ware.config;

import org.springframework.amqp.core.*;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.amqp.rabbit.annotation.RabbitListener;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import javax.annotation.PostConstruct;
import java.util.HashMap;
import java.util.Map;

@Configuration
public class MyRabbitConfig {

    @Bean
    public MessageConverter messageConverter() {
        return new Jackson2JsonMessageConverter();
    }

    @Bean
    public Exchange stockEventExchange() {
        return new TopicExchange(
                "stock-event-exchange",
                true,
                false
        );
    }

    @Bean
    public Queue stockReleaseStockQueue() {
        return new Queue(
                "stock.release.stock.queue",
                true,
                false,
                false
        );
    }

    /**
     * 延迟队列
     *
     * @return
     */
    @Bean
    public Queue stockDelayStockQueue() {
        /**
         * 死信相关配置
         * x-dead-letter-exchange: stock-event-exchange
         * x-dead-letter-routing-key: stock.release.stock
         * x-message-ttl: 120000  //毫秒
         */
        Map<String, Object> arguments = new HashMap<>();
        arguments.put("x-dead-letter-exchange", "stock-event-exchange");
        arguments.put("x-dead-letter-routing-key", "stock.release.stock");
        // 2分钟过期
        arguments.put("x-message-ttl", 120000);
        return new Queue(
                "stock.delay.queue",
                true,
                false,
                false,
                arguments
        );
    }

    @Bean
    public Binding stockReleaseBinding() {
        //String destination, DestinationType destinationType, String exchange, String routingKey,
        //			Map<String, Object> arguments
        return new Binding(
                "stock.release.stock.queue",
                Binding.DestinationType.QUEUE,
                "stock-event-exchange",
                "stock.release.#",
                null
        );
    }

    @Bean
    public Binding stockLockedBinding() {
        //String destination, DestinationType destinationType, String exchange, String routingKey,
        //			Map<String, Object> arguments
        return new Binding(
                "stock.delay.queue",
                Binding.DestinationType.QUEUE,
                "stock-event-exchange",
                "stock.locked",
                null
        );
    }


}
